RecordStore: listRecordStores() : RecordStore « javax.microedition.rms « Java by API

1. Java by API
2. javax.microedition.rms
3. RecordStore

RecordStore: listRecordStores()

 

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordStore;

public class J2MERecordStoreExample extends MIDlet implements CommandListener {
  private Display display;

  private Alert alert;

  private Form form = new Form("Record Store");

  private Command exit = new Command("Exit", Command.SCREEN, 1);

  private Command start = new Command("Start", Command.SCREEN, 1);

  private RecordStore recordstore = null;

  private RecordEnumeration recordenumeration = null;

  public J2MERecordStoreExample() {
    display = Display.getDisplay(this);
    form.addCommand(exit);
    form.addCommand(start);
    form.setCommandListener(this);
  }

  public void startApp() {
    display.setCurrent(form);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
      destroyApp(true);
      notifyDestroyed();
    } else if (command == start) {
      try {
        recordstore = RecordStore.openRecordStore("myRecordStore", true);
      } catch (Exception error) {
        alert = new Alert("Error Creating", error.toString(), null, AlertType.WARNING);
        alert.setTimeout(Alert.FOREVER);
        display.setCurrent(alert);
      }
      try {
        recordstore.closeRecordStore();
      } catch (Exception error) {
        alert = new Alert("Error Closing", error.toString(), null, AlertType.WARNING);
        alert.setTimeout(Alert.FOREVER);
        display.setCurrent(alert);
      }
      if (RecordStore.listRecordStores() != null) {
        try {
          RecordStore.deleteRecordStore("myRecordStore");
        } catch (Exception error) {
          alert = new Alert("Error Removing", error.toString(), null, AlertType.WARNING);
          alert.setTimeout(Alert.FOREVER);
          display.setCurrent(alert);
        }
      }
    }
  }
}

   
  

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